In this paper,the quantitative conception of "higher frequency DDS signal" is defined;the Non-ideal characteristics of DAC is analyzed,especially the performance of DAC s setting time;the correlation of slew time and setting time is proposed;a simplified trapeziform .

Then time modeling and time possibility analysis of temporal phenomena in FTWF-nets were studied.

For the time management requirements to the real business processes, this paper presented a new time modeling and analysis method in workflow models.

Based on the similarities of MSC and UML sequence chart in time modeling,MSC s powerful and exact expression method in timing is applied to UML sequence chart to establish time modeling.

Analysis and optimization of settling time and phase margin of two stages operational amplifier;

The MATLAB optimization program can find the optimal damping factor and natural frequency that makes the settling time of OTA in minimum quickly.

The accurate measure of the setup time of high-speed ADC-driven circuit

An approach how to check the setup time and the hold time of the integrated circuit port signal with the aid of the timing check system in the integrated circuit timing verification stage is introduced in this article.

Six clock design measures for the field programmable gate array(FPGA) are described in this paper which preset a credible clock design according to the setup time,hold time and synchronous principle.